Submission #1727890

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Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
#include <set>
#include <vector>
#include <utility>
#include <map>
#include <cstdio>
using namespace std;
int main(void){
    string s;
    cin>>s;
    if(s=="a"){
        cout<<"-1";
    }else if(s.size()==1){
        int i=s[0];
        i--;
        printf("%c",i);
    }else if(s!="a"){
    for(int i=0;i<s.size()-1;i++){
        cout<<s[i];
    }
    }

    cout<<endl;
    return 0;
}

Submission Info

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